That is correct.
So if im understanding this correctly the coax that is connected to the joey's is not just for TV, but for internet, as its doing MoCA over Coax, forming a private VLAN between the H3 and the other Joey's? Because one of the upstairs joey's that is coax connected was having problems buffering HBO on demand. As soon as I connected a RJ45 to the ethernet port from the house's main router, then the buffering issues stopped. But from the conversation in the thread, it sounds like that would not have even done anything? That the ethernet should not have even worked, or done anything? Perhaps it was just coincidental.
So the joey's will get their data from the H3 no matter what? It basically acts as a router to the joey and redistributes IP based traffic to them?
When I had a hopper 2 and Joey 1, I used an Ethernet cable in the back of the Joey and it worked. I don't believe it was "officially" supported, but worked non the less.
From what I understand, it's just bits. Bits are bits regardless of the medium. It's not creating a VLAN, as that's more of a managed switch thing, but it's IP based Ethernet frames. The frames will either be sent over coaxial via MoCA or over the LAN via Ethernet. Since the Joey is on the same LAN as the hopper on the same subnet, it'll get the frames because the hopper will send the frames with a header with the IP of the Joey and it'll be routed to the Joey via the Router.
That's assuming that the Joey gets its IP and subnet from DHCP when connected via Ethernet.
Of course, I don't believe Ethernet connections are officially supported, but it worked with older equipment. It was probably not supported because tech support troubleshooting LANs with customers wasn't very cost efficient. If I were to guess, and from what you said, it'll still work with Hopper 3s and current Joeys.
As to why the Ethernet connection worked better than MoCA.. I'd blame that on a bad coaxial cable or splitter somewhere.
This is coming from more of a network guy than a Hopper/Joey guy.
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